{"id":2574,"date":"2016-05-17T08:58:04","date_gmt":"2016-05-17T08:58:04","guid":{"rendered":"https:\/\/raspberry-projects.com\/pi\/?p=2574"},"modified":"2016-05-17T11:28:16","modified_gmt":"2016-05-17T11:28:16","slug":"minimising-power-consumption","status":"publish","type":"post","link":"https:\/\/raspberry-projects.com\/pi\/pi-hardware\/raspberry-pi-zero\/minimising-power-consumption","title":{"rendered":"Minimising power consumption"},"content":{"rendered":"<h4>\nDisabling the HDMI port<br \/>\n<\/h4>\n<p>\n<em>Make sure you can get SSH access once this is done&nbsp;first so you have the ability to turn it back on again should&nbsp;you need to!!!<\/em>\n<\/p>\n<pre>\r\n<code>\r\nsudo nano&nbsp;\/etc\/rc.local\r\n<\/code><\/pre>\n<p>\nAdd this:\n<\/p>\n<pre>\r\n<code>\r\n# Disable the HDMI port (to save power)\r\n\/usr\/bin\/tvservice -o\r\n<\/code><\/pre>\n<p>\nThis will disable the port once the RPi has booted (its still&nbsp;active during the power on startup process).\n<\/p>\n<p>\nIf you want to temporarily re-enable it you can use this (in our test it re-enabled the screen but it was then just blank so not much help, but maybe there&#39;s another command to kick it back into life?):\n<\/p>\n<p style=\"margin-left: 40px;\">\n&nbsp;\/usr\/bin\/tvservice -p\n<\/p>\n<h4>\nDisable the LED<br \/>\n<\/h4>\n<pre>\r\n<code>\r\nsudo nano \/boot\/config.txt\r\n<\/code><\/pre>\n<p>\nAdd this:\n<\/p>\n<pre>\r\n<code>\r\n# Disable the LED (to save power)\r\ndtparam=act_led_trigger=none\r\ndtparam=act_led_activelow=on\r\n<\/code><\/pre>\n<h4>\nMinimise&nbsp;software tasks<br \/>\n<\/h4>\n<p>\nUnless you need something don&#39;t install it as background tasks cause the processor to consume more power servicing them.\n<\/p>\n<h4>\nUnder Clock CPU<br \/>\n<\/h4>\n<p>\nApparently doesn&#39;t make a significant difference to idle power, but might&nbsp;be worth experimenting with if power consumption is critical.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Disabling the HDMI port Make sure you can get SSH access once this is done&nbsp;first so you have the ability to turn it back on again should&nbsp;you need to!!! sudo nano&nbsp;\/etc\/rc.local Add this: # Disable the HDMI port (to save power) \/usr\/bin\/tvservice -o This will disable the port once the RPi has booted (its still&nbsp;active [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[124],"tags":[],"class_list":["post-2574","post","type-post","status-publish","format-standard","hentry","category-raspberry-pi-zero"],"_links":{"self":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/2574","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/comments?post=2574"}],"version-history":[{"count":8,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/2574\/revisions"}],"predecessor-version":[{"id":2583,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/2574\/revisions\/2583"}],"wp:attachment":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/media?parent=2574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/categories?post=2574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/tags?post=2574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}